Release Notes: DCT has been added into the clDSPOp class.
clRingBuffer, a lockless ringbuffer class, has
also been implemented. Fixes have been made for
gcc-3.4.x compilers. This version also has x86-64
assembler optimizations.

Release Notes: Support for Intel's Integrated Performance Primitives (IPP) has been added. FFTW support has been updated to match version 3 API and is now used by default. Various code cleanups has been made.

Release Notes: A new base class for multi-rate filters and a new interpolator class have been added. Filters for the multirate filters can be selected from FFT/FIR/IIR. Support for IIR filters has been added. A number of smaller changes have been made.